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(No Model.) 4 Sheets-Sheet 1.

J. A. BRADSHAW.

MUSIC BOX! 1 I0.'31 0,645 Patented Jan." 13, 1885.

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4 Sheets-Sheet 2 (No Model.)

J. AqBRADsHAw.

MUSIC BOX.

No. 310,645. Patented Jan. 13,1885.

(No Model.) 7 4 Sheets-Sheet 3.

J. A. BRADSHAW.

MUSIC BOX.

110.310.6423. Patented Jan. 13. 1885.

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Nd Model.) 4 SheetsSheet 4.

J. A. BRADSHAW.

MUSIC BOX. No. 310,645. Patented Jan. 13, 1885.

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Witqasseslqvaqtur- UNITED STATES PATENT OFFICE.

JOHN A. BRADSHA\V, OF LO\VEIJL, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF THREE-FOURTI-IS TO JAMES LEAGH, ORANGE V. SMITH, AND TTIOETAS F. BYRON, ALL OF SAME PLACE.

MUSIC-BOX.

SPECIFICATION forming part of Letters Patent No. 310,645, dated January 13, 1885.

Application filed March 30, 1883. (No model.)

To aZZ 1071,0722, it may concern.- M through an intermediate gear and pinion,

Be it known that I, JOHN A. BRADSILUV, of L. The screw M has its bearings at the top at Lowell, in the county of Middlesex and State in the stand 0, and at the lower end at 0, of Massachusetts, have invented certain 1111- Fig. 6. Said fan acts as aregulator to the rotary 5 5 provements in Music-Boxes, of which the i'olmotion of the cylinders, thus causing thetunes lowing is a specification. to be played in proper time. Each cylinder F My invention relates to music-boxes; and it is connected with the gear G- by a pin, 71, fastconsists in certain improvements in construe ened permanently in the gear, said pin passtion,whereby the cylinders may be changed ing through a hole in the cylinder-head, thus 60 IO while the box is in operation. rotating the cylinder with the shaft and gear.

In the accompanying drawings, which illus- There is a cam and ratchet-wheel, a, attached trate my invention, and form part of this to the inner side of eaehgear-wheel G,between specification, Figurel represent-s a plan of my said gear-wheelandits cylinder. At every ro improved instrument. Figs. 2 and 3 are end tation of thecylinder this ratchet-gear a comes 6 5 I 5 elevations of opposite sides of thesame. Fig. in contact with a projection, i, Fi 5, on the at is a sectional elevation on the plane of line side of the lever I), thus turning the ratchet and x as, Fig. 1. Fig. is a sectional elevation 011 cam one notch. The cam bearing on the end the plane of line g 3 Fig. 1; and Fig. 6 is a deof the pin a in thehead of the cylinder F, Fig. tail view of the iairregulator ontheright-hand 1, moves the cylinder on the shaft, presenting 7o side of the instrument. another series of pins to the ends of the steel Lille letters designate corresponding parts springs A, thus changing the tune with every in all. of the figures. rotation of the cylinder. When there has been A, Fig. 1, is a comb or set of steel syn'ings an entire rotation of the ratchet-gear and cam, which produce the musical sounds. the cylinder is moved back to its first position 7 5 A is a metallic plate to which the comb is bya spiralspring, E, placed around the cylinattached. der-shaft,between the head of the cylinder and F F are cylinders with pins set in their surits bearing at the end opposite from the ratchifaces,which play the tunes. These cylinders ct-gear, thus bringing the cylinder in position are mounted on shafts D D, which have their to repeat the filSU tune. There are four cyl- So hearings in circular plates 0 G, one at each inders placed in bearings equidistant from the end of the cylinders. Said plates C G are secenter shaft, B, said cylinders having bearings cured to a central shaft, B,which is supported m'nnwithstamls O G. Said stands and bearings by bearings HR at each end. The cylinders are permanently fastened tothe circular plates F F and their shafts DDare rotated by an1ain- G C by screws 01. a, as shown in Fig. l. 85 3 5 spring and drum, 1%. The mainspring and II II are set-screws passing through flanges drum are mounted upon an arbor supported in O 0, formed on the stands 0 0. These setscrews standards h,and provided with the usual ratehbear upon the outer edge of the circular plates ct, D pawl E, and spring E, to prevent the C, and regulate the distance of the cylinders uncoiling of the mainspring. from the points of the springs A, thus giving 0 40 S S S areintermediate gears which connect the desired amount of vibration. Each cylinthe inainspring-drum with the shafts l) and der is held in its place by the slide 1?, Fig. 4, their cylinders F F. which has agroove in the end V, which engages I) is agear on the end of eachcylindershatt, a projection, II, on the stand 0. This slide is which connects with the gear-wheel S. and held in place by the lever I and connecting 95 thus gives rotary motion to the cylinder. link V, and it rests upon the top of the stand G is a gear-wheel on the opposite end of Q, the lever I being attached to the slide 1 each of the eylinder-shafts, which gives motion by a pin, .2, and its lower end to the stand Q to the shaft J through the pinion I on the end by a screw, .2", the stand Q being permanently of said shaft. attached to the plate A. When itis desirable r00 Mounted on the shaft J is a gear-wheel, K, to play a new series of tunes, the slide 1? is which conveys motion to the screw M and fan withdrawn by means of the lever I thus releasing the cylinder, which is replaced by another,which is secured in proper place by the slide 1? being returned to its former position.

\V is a lever that is fastened to the stand Q. by a screwflV, at the lower end of the lever, said lever being placed at right angles to the slide 1? at the end opposite the end V. This lever W is moved to the right when it is desired to change cylinders, thus releasing the slide 1,which is then withdrawn and the cylinders changed. The slide is then replaced and the lever \V is moved to the left, thus securing the slide in its place. The lever has shown in Fig. 1, is connected with the lever U by a connecting-rod, Y.

U is a pin near the middle of thelever U, on which the lever turns when the lever \V is moved. The opposite end of the lever U en ters a groove in the coupling T, and said coupling is thus moved on the shaft X. The coupling is connected with the shaft by a pin in the shaft and a groove in the hub of the coupling, between the shaft and the coupling, the shaft thus giving motion to the coupling. lVhen the lever V is moved to the right, the coupling T is brought into contact with the gear-wheel T, (said gear-wheel being loose on the shaft X,) thus giving rotary motion to the gear-wheel T by means of teeth out in the end of the coup ling, which mesh with teeth cut in the end of the hub of the gear-wheel. This gear-wheel imparts motion to the pinion and gear L, said gear connecting with a rotary screw, ill, and fan M, (said screw having a bearing at the top end at O" in stand 0, and at its lower end in the same stand at 0 thus acting as a regulator to preventa too rapid motion of the mainspring-drum and train of gears when the cylinders are being changed, and the first regulator stops by being disconnected from the gear G- on the end of the cylilnler-shaft. This dis connection is being made while the cylinders are being changed, and when the gear G is moved away from the pinion I, and before the gear Gr of the next cylinder takes its place.

Vhen the cylinders are changed for a new series of tunes, and the cylinder is in its proper place and held there by the slide]? and projec tion II, the first regulator is put in motion, the lever \V being moved to the left, thus securing the slide 1. in its place and releasing the second regulator from action.

In Fig. 5 are represented soumling-boards t I, made of pine or spruce. These boards are connected together by narrow strips of the same wood, '1; v. The object of these sounding-boards is to increase the volume of sound. (Z (l are projections on the under sideof the plate A. The sounding-boards are secured to the under side of said plate by bolts 0 (l, O C-one at each end of the plate.

I am aware that a music-box with a series of cylinders upon a common rotating shaft, whereby the cylinders may be brought in succession into engagement with the comb, is not new, as it is shown in the l?atent,No. 105,972, to A. Paillard; but, so far as I am aware, such an arrangement has been confined to music boxes operated by hand, and has never been used prior to my invention in automatic or self-playing music-boxes.

I claim as my invention- 1. In a music-box, the disks 0 upon the shaft 13, a series of cylinders mounted the1.-eon,with the bearings C, flanges O, and set-screws H, in combination with the slide 1 and levers T and \V, as set forth.

2. In a music-box, the disks C upon the shaft 13, having mounted thereon a series of cylin ders,with bearings or stands 1, having flanges O, set-screws H, and projections H, in combi nation with the slide 1, levers l? and V, connecting-rod Y, lever U, coupling T, gcar-whecl T, gear and pinion L, screw 31, and fan M substantially as set forth.

Witnesses:

JAMES LEALJI, ORANGE V. SMITH. 

